Web-feeding mechanism.



F F a.

INVENTOR.

O z W Z-W Q A YS- UNITED STATES PATENT OFFICE.

oscm nosnn, or. NEW YOBK, n, Y., AssIGNo TO n. HOE AND co., or NEWYotax, N. Y.,

n oonrommon or NEW Yon WEB FEEDING MEGHANISM.

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Speciflca'on of Letters Patent.

Patented July 30, 1918.

Application fil'ed November 1 7, 1915. Serial No. 61,898.

To whom it may concern:

Be it known that I, OsoAR RO SEN', a citizen of the United States,residing at New York city, county of Kings, and State of New York, haveinvented certain new' and useful Im rovegnents in-Web-Feeding Mechanism,fu ly described and re resented in the following specification an theacor npanying drawings, forming a part of the same.

This invent-ion relates to certain inprovements in the rols or bars'employe in web feeding mechanisn usedfor giidng and directin the webthrough the machine.

In t is class of nechanism, and articnlarly mechanis n for forwardingen' d recting w'ebs such'as are employed' i'n rtaryweb prntin `machines,it isfdesirable to' 'ave the turrier ars and for Wardin and ot errollsover which the fpaper' or ot eif web' niaterial is led, and by which itdireeted, 'of sn'ch character that little'ftietiri will 'be deirelopedbetween the web'an'd'the roll or'bar, so that the web will'be easil andaccurately dircted throughthe machine and liabi'lity to iiijfiry r'ed'ce'd te nliniiniiin. It`is fur-- ther' desirable, particnl'arly'where'the chine is handlin'g freshly printed' products, such 'asa'frshlypi inted perfe'cted web, th'at the printed oi'ton of the web beli'fted away'froni t 'e siirfate of the roll oi" bar over which theweb'travels, so as 'to avoid smudgin' of'the f'reshink, the web beingsupporte' in its travel'byits iin'printed na'rportiois.

It is the objectof the present invention to provide an iinprovedcons'trnction, for use in web feedin ,-machines`,whereby the f'r'ictionbetweent e' web and the rol ls or bars overwhichitis direct'ed or' led,s' reduced to a' miniinu'm, the constrnction being' such that the'frition du'e`to the forward'movement of the 'web is' reduced to' ainini'rnum and also any friotion due to a slight sidewise movement ofthe w'eb is also likewise r' fli ce It is a firther object o f thenventon to provide' :i cns'trction in wh'ch a prodnet, sich as afr'eshly printed web, may be directed or through a feeding mechanism,the web being supported on its nrinted portions or margins so that theriotion of the web as it passes over the bar is reduced to a minimum andthe printed portions of the web are not in contact with the feedingmechanism. l

For a full understanding of the invention, reference niay be had to theacconpanying drawings, in whichi Figure' 1 is a plan view showing thepreferred form of theroll' or bar employed with a printed web foreflecting the 'desired e igl 1 ig. 2 is a section taken on the line 2-2of Fig.'1; f

Figs. 8 and 4 are detail sectional views showing various niodifioationswhich' maybe m y ,and a ig. 5 is atop plan view of the cover plate slownin Fg. 4 for 'retaining the'balls in p ace.

Beferring now to the drawings, the invention has been shown inconnectionwith `art of a printing machine in which the pro not to.beforwarded 'is'alprinted paper web, though 'it will be understood thatthe invention'is adapted for and may be used'in 'other web feedingrnachines in' which a rodiict other than a printed webis frwardbd' anddirectedthrough the machine. Insnch web printiiig machines, the printedweb is foriv'arded and directed 'through 'the 'fnachine over varioisrolls orbar's. The web is frwarded byanysuitable forwardin'g mechanisrn,as rolls Ri While'the'i'iveiitin may be employed` with any of the rollsor bars in the machine, in the particnlarconsti ucv Jllt ',4

tion llustrated lt has been shown 1n connection with the turner r'oll o'r angl e roll injarked 1, though it` will be understood that theinvention is'a plicable to and mav be used if desiied wit any of therolls rba'rs over which' the web is' led or by which it is directed. g

Constructions embodying the invention in its preferred form' Willinclude in combination with these rolls antifr'iction deviees whichshall act to reduce to a niini'mnni the friction between the paper andthe'surface of the roll over which 'the'` paper travels,

these devices being preferably of such churacter as to reduce both thefriction due to the forward travel of the paper, or any frietion whichmay be caused by a slight sidewise movement of the paper owing to thepaper being improperly led or directed through the machine, or suchsidewise frietion due to other reasons. While the par- `ticularconstruction of the antifriction devices employed for effecting theseresults may be varied, in the best constructions these antifrictiondevices will be in the form of a plurality of balls 2 which are mountedin the roll or bar 1. These balls will be niounted in the bar so as tohave a free turning movement therein, and, furthermore, will be mountedso that they will project slightly above the surface of the roll or barwith which they are employed.

These balls mav be variously arranged on the roll or bar. `Where theproduct which is passing through the machine is, as in the presentinstance, a product which has a freshly 'printed surface, preferably theballs are arranged as shown in Fig. l, the balls being arranged on thebar so as to form a projecting surface which will come adjacent themargin or unprinted portion of the paper web as it goes over the bar. Asshown in Fig. 1, in which a turner roll is shown, that is, a roll whichturns and changes the direction of the travel of the paper, this iseffected by providing the roll with a groove cut spirally about theroll. The balls 2 are arranged in this groove, and are loosely heldtherein in any suitable manner. As shown, for instance, in Fig. 2, agroove 3 is provided with a ball-retaining trough 4: suitably held inposition in the groove. With this construction the printed surface ofthe web is kept away from the surface of the roll and is supported atits nargin, and the balls act to reduce both the forward friction of theweb and any sidewise friction, the balls loosely turning in theirgroove.

In machines operating to produce printed products, and particularlywhere the product has dried, and in other machines where unprinted anddried products are being forwarded, it may be desirablc to increase thenumber of balls over the surface of the roll so as to provide a greateranti-friction surface for the paper to travel upon, and suchconstruction is within the scope of the present invention. While thenumber and arrangement of the balls may be varied, two arrangements areshown in Figs. 3 and 4. ln Fig. 3 the roll is shown as provided with agroove 5 having a ball retainer G, the balls being arranged in theretainer in twos. In Fig. et the balls are shown as arranged in threesin a groove 7 in the bar, held in place by a cover plate 8, the ballspreferably being arranged with a cover plate as shown in Fig. 5, thatis, with groups of two balls alternating with groups of three ballsalong the surface of the roll where the paper is to come in contact.

V/hile the invention has been shown and described in relation to aturner bar for web printing machines, it will be understood that it maybe used in various other relations in which paper is to be forward anddirected through a machine, and while the antifriction devices have beenshown as arranged in certain numbers and in certain relations, it willbe understood that a wide Variation may be made in the arrangement andnumber of the balls without departing from the invention.

What is clainied is:

1. In a web feeding device, the combination with means for forwarding aweb of material, of a roll or bar over which the web is led, and devicescarried by the roll over which the web passes, said devices forming anantifriction surface conforming to the position of the edges or otherunprinted portions of the web in its traveling movement.

2. In a web feeding device, the combination with means for forwarding aweb of material, of a roll or bar over which the web is led, andantifriction devices on the roll projecting above the surface thereofand forming an antifri'ction surface for' the web conforming to theposition of the edges or other unprinted potions of the web in itstraveling movement.

3. In a web feeding device, the combina- -tion with web forwardingmeans, of a roll or bar over which the web is fed, and a plurality ofballs loosely mounted on the roll and arranged to project above thesurface thereof, said balls forming an antifriction surface for the webto travel over.

4. In a web feeding device, the combination with web forwarding means,of a turner bar over which the web is led, and a plurality of balls onthe roll arranged spirally of the roll and projecting above the surfacethereof, said balls forming an antifriction surface over Which the papertravels on its unprinted margins.

In a web feeding mechanism, a roll or bar over which the web travelsprovided with a plurality of loosely inounted balls arranged to pro ectabove the surface of the roll and into the path of the web.

6. In a web feeding mechanism, a turner roll or bar over which the webtravels provided with a plurality of balls arranged spirally of the rolland projecting above the surface thereof and into the path of the web.

7. In a web feeding mechanism, a roll or bar over which the web travelshaving its surface provided with a plurality of balls web.

and. projeoting above the and into the path of the 8. In a, web feedingmechanism, a roll or 5 bar over which the web travels provided with aslot, ers allowing th balls in the slot, and ball retaine bells to havefree turning v path of the Web.

movements in the s1ots, the balls proj eoting above the Surface of therolls and into the 10 In testimony whereof, I have hereunto set my hand.

I OSCAR ROESEN.

